.tmx file import does not overwrite existing TM

Hello,

 

I am using Studio 2017. Whenever I import an alignment or any sorts of .tmx file into a TM in Studio, the imported segments do not overwrite the existing segments. The other segments are added, but the ones that are already in the TM do no get replaced by the ones in the .tmx file even if I click on "Overwrite..." during the import. The import process is behaving as though I clicked on "Leave unchanged...". Is this an issue with Studio?

I tried to import the same .tmx file into an empty TM created in Studio, and it worked fine. It’s just the "Overwrite" feature that doesn’t seem to work.

Thanks for your help.